Poster-hanger&#39;s scaffold



April 16,1929; R L STED' 1,709,368

POSTER HANGER S SQAFFOLD Fnedse'px. 12, 1927' 2 Sheets-Sheet 1 FOR Roger W- Olrh: fed

aYma/ayw ATTORNEYS Ap 16, 1929. R. w. OLMSTED POSTER HANGERS SCAFFOLD Filed Sept. 12, 1927 2 Sheets-Sheet 2 U l f yer W I I M MM |NVENTOR Olmsfe l ATTORNEYS v Patented Apr. 16, 1 929.

ROGER w. 'oLMsT'En, orsANFnANcIsco, cALIFoRNIA; essielvon'ro j-FQ TER a KLEISER COMPANY, OF f S AN 'ERANC NEVADA.

ISCO, oAmromvrasn CORPORATION or 'POSTER-HANGERS SCAFFOLD.

Applicationffiled September 12,1927. Serial N0. 218 ,903. V

This invention relates to scaffolding for poster hangers use and hasjas its objects im proved portable scafi'olding especially adapted for quick erection and removal, which will I Jbe safe to work upon, and which-will not mar the s1gns.or-posters,,or their frames: Also such a rigglng which Wlll be light to carry f about and cheap to manufacture.

Briefly described my invention comprises a plurality ofvertically hanging poles or bars hooked overthe upper edge ofthe signboard,; spaced outwardly therefrom and locked tothe board at the bottom, also aladder similarly suspended and locked, and a hori zontal platform :board carried at various heights by the suspended bars and the ladder.

In the drawings accompanying this application Fig.1 is a front elevation of a sign board with my scaffolding in place. 7

Fig.2 is an enlarged-broken side View of board, and Fig. 3 is afront view of Fig. 2.

Fig. 4 is an enlarged broken side viewof one of the bars, andFig. 5 is a front view of Fig. 4.

Fig. 6 is a planview of the ladder spreader. and locking brace,,and Fig. 7 15 a 'planview of the bar spreading and locking brace.

Before going into details of the scaffolding the sign-boardstructure shouldbe considered, as its construction directly cooperates with the elements of the scaffolding in order to carry out the invention.

The signeboard best suited. forapplication of myscaffolding consists of a signpanel 1 framed in amoulding 2 provided with a heavy outer-edge or cap 3, usually of 2 X6 timber,

and the whole supported on vertical posts as at 4'. Fig. 2 shows the'sign-bo'ard itself in section embracing the above features.

Hooked over the upper edge of the signboard near opposite ends are bars 5, and in the centerofthe sign-board similarly suspended is a ladder 6, the ladder and bars ccoperating to support a plank or staging 7 for the poster hangers-to stand upon in doing their-work.

r The ladder and bars are spaced outwardly from the bottom of the board by braces as shownrespectivelyat8 and 9.

s In further detail the bars are preferably each a piece of angle iron to which a metal 1100115 is firmly secured, andthe ladder is.

the ladder hookedjand locked to. the sign-' ironandare each made with a atthelr rear ends provided with gagethe sign-board as described torthe lada made with sides converging at the upperend. witha metal hookG secured thereto. I 7

The braceorspreader Sfor the ladder'com sists of an angle-iron arm 8 witha cross arm 10 at itsforward end providedwith down wardly extending'flanges or fingers 11 adapted to straddle a rung 0f the ladder as indi cated, while at the rearward end of the-brace is a crossjarm 12 provided .With'ahook'or hooks as at 13 adapted to hook over the forward and upper edge ofthe lower moulding cap 3 (see F ig. 2). and the arm8 is extended back beyond the cap?) and formed. with anupwardly turned end .14 to'engage the rear side oi, the moulding cap. Thus the brace when n position shown in F ig. 2 is locked to the. sign-board so that it can neither. rise, tall, or bepulled or, pushed out of engagement except by first lifting the forward end from the rung 15 of the ladder to thereby drop therear hook 14 from engagement with r the rear of the moulding'cap, thus permitting the brace to be pulled forwardly to' free hookl3. fromthe moulding cap. f I f v Thebraces 9 for the bars arealso of angle cross arm 16 hooks to en derbrace. Braces 9 however extend forward ly beyond the bars so as to provide a support for the plank or staging-7 and the end 9.is

bent'upwardly to preventthe staging from being pushed off; whereas the brace 8 of the 1' ladder supports the stagebehind the ladder, as the'ladder is than thepolesare, r

Brace-9 is detachablysupported on the bar by means of abracket 17 oil-the bar which engages the outer: side 'of -the angle iron brace spread further from the sign. 1

whilea pair of stops 18 on the bracehold the bar in proper angular spread relation to the signsboard. .To remove the brace it isfir'st lifted from engagement with bracket 17 and then disengagedfrom the'sign-boa'rd as described for brace 8. Anladditional bracket 17. is provided on the bracket to'positionfthe brace for signs of greater width, though it should be remarked that the sign frames are now. al-

ability of'the brace to difierent positions is seldom required.

In use the staging is supportedat either of two positions, at dotted 'position A? across inost'allof standardized size so that adjustthe lower braces so that a workman thereon ICC) can work on the lower part of the sign, or at full line position B to enable'the workman to reach the-upper part of the sign;

In position B the staging rests on twoup- 1 standing brackets on the bars and a hanging bracket on, theladder. The upstanding brackets each comprise a strut 2O pivoted at its lower end to the bar 5 andatitsupper end to a support made of two pieces 2122 pivoted respectively to the strut and the bar at opposite ends at 23-24 and to each other in-the center'at 25 so that the center joint may be broken-byanupwardpushand thebracket will' fold against the bar to dotted position X. Section 21* of the support is here-shown asan angle iron extendingto'the bar H'l'OVQl lying relation-to section 22 soias to form a stop thereagainst when in open position.

The-hanging bracket on the ladder eomprises links 26 pivoted together at 27, and at the lower end at 28 toa' horizontal supporting rod 29 while the forward ends or links and rodarepivotally connected to a block 8O positioned on theladden and through which block several of 'theladder rungs pass:

The ladder bra-cllret as described may be folded upwardly against the ladder by first breakingthe joint of the links:

For the staging anyplank may'heusedgbut I prefer a plank made of spaced strips as in dicated. a

linoperation the bars and ladder are hooked V 7 over the upper edge ofthe sign-board; the

braces locked to-the'loweredge; the brackets upitolded and the staging placed in either position Ai'or Band the apparatus is ready for use. The ladder is best placedin the center between bars 5 so thatworkmen can quickly reacheither endofthesign, though it is o1 course possible to interchange it in position with oneofthe bars, or-ln short signs use but the ladder and one bar.

The cross arms on-thebraces-locked'to the lower edge'of thesign -board and to-thc ladder rung prevent any swinging of the scaffolding in use.- 7' V g It should be noted thatwhile the staging is used first' at onelev'el A or'B andthen at the otherjto completethe'signy. it is'evident that for very large signsthe apparatus might be greatly enlarged so that the staging could be 7 placed inboth positions at the same time, or

even more positions for thestaging could be provided for.

In usin the word Jlank 1n the claims hereto it is to be understood to cover any type of staging for the workmen to stand upon.

In contemplating the above disclosure'it willbe evident that many variations in detailed construction may be resorted to Without affecting the mode of operation and any such modifications as come within the spirit of the invention are intended to be covered in the appended claims.

I claim:

l. Portablescaffolding comprising a plu raht'y o'f'supporting members adapted to engage the upper edgeof asign=boardstructure and hang suspended therefrom, means spreading themembers outwardly from the lower part of the sign-board, and means on said members arranged and-adapted forsupporting wherein oneotsaid supporting members is a ladder and said plank passes in back ofthe ladder and in front ofjthe other of said members when in position. p

4. A portable scafli'old unit comprising-a bar provided with-a hook at one end' forhooking over theupper edge of a sign-structure, and abrare at the lower portion adapted to hook to the'l'ower edge of the-signstructure for holding the bar spaced outwardly tl'ierefromwhile preventingin or out movement of thebar.

5. Portable scaffolding comprisinga'plurality of rigid members hooked at the upper end and adapted'tor hooking over the upper edge of a'sign-board structure so that themembers will hang suspended in front of the signboard, a brace at each member passing under and'en gaging the'lower edge of thesign board structure spacing the member outwardly therefrom and providing a support fora plank inhorizontal extension along the 'face i of the sign-board.

' P ROGER w. oLivisrEn. 

